期刊
APPLIED SURFACE SCIENCE
卷 546, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.148892
关键词
CoTiO3@NiO; Core-shell; Z-scheme; Photodegradation; Tetracycline
类别
资金
- National Nature Science Foundation of China [51820166, 51702177]
- Youth Innovation and Technology Support Plan of Shandong Province [2020KJA008]
- Colleges and Universities Twenty Terms Foundation of Jinan City [2019GXRC036]
- Key Research and Development Program of Shandong Province [2019GGX103004]
The hierarchical binary 1D@2D CoTiO3@NiO Z-scheme heterojunctions exhibit enhanced photocatalytic activity for tetracycline decomposition under visible light, with CoTiO3@NiO sub-microbelts showing superior efficiency compared to pristine CoTiO3 and NiO. The efficient electron-hole separation and increased surface area provided by the Z-scheme heterojunctions contribute to the improved TC degradation efficiency, showcasing potential for wastewater treatment.
The hierarchical binary 1D@2D CoTiO3@NiO Z-scheme heterojunctions with well-defined core-shell feature display the enhanced photocatalytic activity for antibiotic tetracycline decomposition under visible light illumination. The obtained CoTiO3@NiO heterostructured sub-microbelts show a superior photocatalytic efficiency to the pristine CoTiO3 sub-microbelts, and NiO nanoclusters. The TC removal efficiency of CoTiO3@NiO submicrobelts is 1.75 and 2.15 times higher than that of pristine CoTiO3, and NiO, respectively. The electrospinning CoTiO3 sub-microbelts are decorated uniformly with in situ nanosheets of NiO longitudinally aligned through a facile two-step precipitation-calcination processure. The Z-scheme heterojunctions consisting of CoTiO3 and NiO efficiently accelerate photo-generated electron-hole separation efficiency, and afford a high specific surface area, which ultimately improve the efficiency of TC degradation. The profitable carrier transmission mechanism and special core-shell structure in the CoTiO3@NiO system are in charge of the elevated catalytic activity because of the formed Z-scheme system. These features demonstrate that the hierarchical CoTiO3@NiO core-shell heterojunctions have the great application potential for tetracycline removal from wastewater.
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